ArmijoConditions.H

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License
    This file is part of OpenFOAM.
 
    OpenFOAM is free software: you can redistribute it and/or modify it
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    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
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Class
    Foam::ArmijoConditions
 
Description
    Class satisfying the Armijo line search conditions
 
SourceFiles
    ArmijoConditions.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef ArmijoConditions_H
#define ArmijoConditions_H
 
#include "lineSearch.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
/*---------------------------------------------------------------------------*\
                       Class ArmijoConditions Declaration
\*---------------------------------------------------------------------------*/
 
class ArmijoConditions
:
    public lineSearch
{
protected:
 
    // Protected data
 
        //- Multiplier of the merit function reduction computed using
        //- a first-order Taylor expansion
        scalar c1_;
 
 
private:
 
    // Private Member Functions
 
        //- No copy construct
        ArmijoConditions(const ArmijoConditions&) = delete;
 
        //- No copy assignment
        void operator=(const ArmijoConditions&) = delete;
 
 
public:
 
    //- Runtime type information
    TypeName("ArmijoConditions");
 
 
    // Constructors
 
        //- Construct from components
        ArmijoConditions
        (
            const dictionary& dict,
            const Time& time,
            updateMethod& UpdatheMethod
        );
 
 
    // Destructor
    virtual ~ArmijoConditions() = default;
 
 
    // Member Functions
 
       //Return the correction of the design variables
       virtual bool converged();
 
       //Update step in given direction
       virtual void updateStep();
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //